Improvement in revolving harrows



M. W. HOUSE.

Rotary Harrow.

Patented Jan. 18,1859.

Inventor:

Witnesses wfM UNITED STATES PATENT OFFICE.

MARK W. HOUSE, OF CLEVELAND, OHIO.

IMPROVEMENT IN REVOLVING HARROWS.

Specification forming part of Letters Patent No. 22,651, dated January18, 1859.

To all whom it may concern:

Be it known that I, MARK W. HOUsE, of Cleveland, in the State of Ohio,have invented certain Improvements in Rotating Harrows; and I do herebydeclare the following to be a correct description of the same, referencebeing had to the accompanying drawings, in which- Figure 1 is aperspective view of my improved harrow. Fig. 2 is a rear view. Fig. 3 isa detail view, showing the mode of at taching the tooth; and Fig. 4 is avertical section of one of the wheels or barrows, showing the mode inwhich the barrow is attached to the frame.

The same part is indicated by the same letter in all the figures.

The nature of my invention consists in the mode, hereinafterparticularly described, of making the connection between the wheels ofthe barrow and the frame.

In the drawings, A marks the frame of the barrow; B, the slidingadjustable arcs; D D, the wheels; E, theteeth; F F, the axle-boxes; G,the spindle; H, the hinge at the clevis; a, socket for teeth; I), nut tosecure teeth; 0, rim for reception of lower part of axle-box; (1, bodyof axle-box; 0, cap of spindle and axle-box; i, screw attaching cap a tospindle G; a, braces through which axle-boxes are bolted to frame; 8 8,bolts attaching spindle to disk of wheel.

I make the whole implement of iron. The frame is hinged at the clevis H,and has two sliding arcs, B, for adjusting the distance between thewheels D D of the barrow. Attached to these'arcs are the handles 0 O, bywhich the harrow is controlled. The wheels are similar in generalconstruction and appearance to those of ordinary rotary barrows; but-theteeth E are attached in a novel manner, as shown in Fig. 3. Imake thebody and shank of the tooth tapering, as shown, cutting a screw-threadat top for the reception of a nut, b. The tooth thus formed is receivedby a socket, a, of shape corresponding to that of the tooth. Thisarrangement en ables the tooth to be tightened as it wears by means ofnut b, and to be removed and replaced atpleasure.

The wheels D D. are attached to the frame by means of the axle-boxes Fand the spindle G, constructed and arranged as shown in section in Fig.4, where c is that part of the disk of the wheel through which thespindle Gr passes, and to which it is fastened by the bolts or screws 8s. This part c has a rim projecting up from it. The spindle G has aflange, which rests upon 0, as shown, and through which the bolts 8 3pass to attach the spindle to the wheel. This flange is just wide enoughto leave a space or groove between its edge and the rim of c, as shown.Into this space or groove a rim at the bottom of the body (1 of the boxis received. In the central axis of spindle G a female screw-thread iscut for the reception of screw 6, as seen in the figure. This screwconfines the cap 6 on top of the spindle G and the box d. Thisconstruction has the advantage of excluding all dirt and grit, whichwould enter and wear the spindle and obstruct its operation. It has thefurther advantage that the spindle can be removed and renewed wheneverfrom any cause it becom es desirable.

The frame A is horizontal, and the inclination from the vertical of theaxes of the wheels (shown in Fig. 2) is produced by setting theaxle-boxes onthe frame at an inclination by making the braces 12thickerat the bottom than at the top.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

The combination, with the spindle of a revolving harrow, of the cap 6and box d, for the purpose and substantially in the manner described.

In testimony whereof I have hereunto set my hand this 22d day ofDecember, A. D. 1858.

1 MARK W. HOUSE.

Witnesses:

FRED FIOKEY, J r., CHAS. F. STANSBURY.

